Car-door-locking mechanism



L. J, TILLMAN CAR DOOR LOCKING MECHANISM frei. 17.11925.

Filed Feb. 2. 1923 I INI/ENTOR.

4,2 AT oRNEYs.

Patented Feb. I7, 1925.

PATENT OFFICE.

LAMBERT J. TILLMAN', OF TOLEDO, OHIO.

CAR-DOOR-LOCKING MECHANISM.

Application filed February 2, 1923.

To all whom t may concern:

Be it known, that I, LAMBERT J. TILLMAN, a citizen of the United States, residing at Toledo, in the county of Lucas and State of Ohio, have invented certain new and useful Improvements in Car-Door-Iiocking Mechanism; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to door :locking mechanism for railway cars or the like, and has for its object to provide improved means for preventing accidental or undesiredL movement of door locking members. A more specific object is to provide a radially acting friction spring for a pivoted door locking member.

With such objects in view, the invention consists of the construction, combination and arrangement of parts as will be herein described and particularly claimed.

In the accompanying drawings which show the preferred form of the invention: `Figure 1 is a view, partly in section and partly in side elevation, of a door locking mechanism provided with a spring device constructed in accordance with thepresent invention. y

Figure 2 is a transverse vertical sectional view, taken on the line 2 2 of Figure 1.

Figure 3 is a fragmentary vertical sectional view disclosing the relation `of the spring to the pivotal support of one of the locking members, the view being taken on the line 3-3 .of Figure 2.

These drawings show a portion of a door locking mechanism similar to that shown in Patent v No. 1,431,506, issued October 10, 1922, to W. E. Wine. The invention is particularly applicable to such locking mech- `anisms, but may also be employed with many other forms. r

Referring now to the accompanying drawings, a portion of the side of a car is indicated by the numeral 1, while 2 indicates an angle iron which may be secured to an associated door. As shown, these parts may be similar to corresponding parts disclosed in the Wine patent above referred to.

A bracket 3 is arranged to lie against and be secured to the outer face of the car side 1. Extending outwardly from the face of the bracket are integral spools 4 which re spectively constitute journals or pintles for Serial No. 616,543.

the pivoted door supporting hook 5 and the hook-locking cam 6. A plate 7 which preferably overlies the entire face of the bracket 3 extends over portions of the hook 5 and cam 6 and bears directly against the ends of the axially perforated pivot bosses 4. The hook 5 and cam 6 are arranged between the outer face of the bracket 3 and the inner face of the plate 7, sutcient clearance being allowed to enable the two movable parts to be operated freely. The bosses or spools 4 are preferably of such length that the plate 7 may be secured directly against their ends. Rivets 8 which pass through the centers of the spools 4 and through registering openings in the plate 7 and in the car side 1, serve not only to hold the plate 7 against. the outer ends of the spools 4, but also secure the entire device to the car side. An additional rivet 9 may pass directly through the plate 7 and the base portion of the bracket 3 and through the car side. The foregoing features of construction, which are disclosed in the above mentioned I'Vine patent, are particularly well suited for adaptation to my invention.

The present invention is concerned with means for preventing the accidental rotation of one of the door locking members and is shown herein as applied to the cam 6. As such cams are more likely to become accidentally displaced than are elements such as the hook 5, the means for preventing ac cidental operation are accordingly more frequently used with such a cam than with thc direct acting hook. A friction-producing spring such as is shown and described in Patent No. 1,268,725, Kadel t` Pilcher, issued June 4, 1918, has heretofore been elnployed in devices of this character to press the cam longitudinally of its pintle against a suitable restraining member. By the present invention a spring may be arranged to press the ycam radially against its pintle, thereby producing frictional resistance against rotation. In the embodiment illustrated in the drawings a cavity 10 is provided in the central portion of the pintle opening of the cam to receive a flat bar or beam spring 11 which extends across the top surface of the cam pintle. This spring, when free, slightly constricts the normal pintle opening of the cam so that in assembling the cam upon the spool or pintle 4 it is necessary to spring the bar 11 back. This spring pressure produces a constant pulling of the lower arc or quadiantfce'of the'piiitle opening of the' camA against" the under face off the circumference of the cam pintle or spool'e; and results in establishing-fbetween these parts a frictional resistance of fixed or constant value which prevents rotationJ-'of-Ithl provided at"` 'one side-ofthe piirtlell opening tei-ed; into alemania-gea' mrt-ions ie ,1er the pintle op`ening.-v When the spring- 11 has:

been Vmoved into its final position inthe enthey cam hfas' been "sl-ip pedover the" spool 4,' the spring -11 cannot drop down; to aposie tion Where it? conldivorkout througlrthe' Cau-Yflledt@ aecomfmfbdate are. Spring n; Shoulders' l 15- are preferably pieviaefr at either-'side o-fthe opening-to form 'seajts vfor f the,v ends; oftle' spring". Intermediate offthegshoulders, at 16', some clearance isy provided ,f'

to allovv for-the deflection-ofthe spring.'`

The arrangement just "described" constitutes an inexpensive and satisfaeto-ryvmeans of introducing-- this desired fric-tionalVV resistance Landflra's the 'special' advantagev that it cannot be tamperedwitlrandfcannotbecome@ displaced? or inoperative from-'interferenceby outside elements:

Having thus-described fmy invention, what; I clairnf as= new andi'desi-retoY seeureby Leti tersTPa/tentis 1 5 *In a deoril supporting V;meclranism" for railwayca'rjs; afpivotfed door locking'.` inem-1` ber5 and-Vsprinjg nit-5ans `n rountfed' upon-said lockinglimemberfand actingfradiallyj ,of the pivotl adapted? fto iin'dii'cefrictional resistance ber;- andlspri"n'fggA means innu'ntedf uponfsai'd lock'iirgllmembeihandf acting radially ofthe pivot/ adaptedlto vindu `ze jfrictionalresistance between fthe lockli"l Imemberfandjits pivoti' `A55. A1@- doorfflockfrngf mechanism involving @thierVV forms" and embodiments ofl the-*invention may;r however, be* iriade Witbiir the scope ofl the claim-s, Withfo'utfdeparting i from theA spirit a locking;ineinberhaving pintle-opening for'the'reception of a pintle on Whichsaid memberisV adapted to turn, the said opening rbeing 'enlargedf atV a point intermediate its axial length, and a friction springmounted onsaidlocliing member and disposed in the said enlargement.

4k: A "doorv locking imechanism involving a ,locking member having a pintle opening.

for the reception'of agpintle on which said member is adapted to turn; anda vspring mountedon said locking member andacting radiallyY withy respect thereto disposed With-z ink said-opening.

5. A door' locking mechanism including la locking, member having a. pintle opening" thereon', Va p intleJ` extending'to said opening and; upon which. said 'locking 'member is adapted toturn, and a friction spring mountmem-ber to 'produce' frictional 'resistance between the latter and r a relatively liXed portion of the carbody, the parts beingV so ed uponand cooperating'ivitli saidllocking formedand arranged 4that application ofl theflockingmember to its pintle Willlock thesaid spring in operatingjposition; l

6; 'A door locking member adaptedito be rotatably mounted on a p intle and'having a vpintle opening` formed with an enlargef ment mediate its length adaptedto receive' a frictionspring, and;h'a`ving an additional adaptedfto'permit the entry of the springk upon` the removal' ofA the*lockingV member from its pintle.VK

member 'having 'a pintle opening for j reee'iv#` ing a pintle on which said locking member is-adapted toitu'rn, of' abeam spring'carriedby thelockin'g *member and` arranged," when undeflected, ,to slightly overlap the said pin-.

Vtls-opening;

8^." A" door lockingv'm'echanism .involvinga rotatable locking member, having' a p intlev` opening formed With a "radialfenlargemen-t; andprovidin'g shoulderslwithin the sai'dj'enf upon tli'eishoulders'and adapted to engage a pi'ntle" extending" into said opening, 'tiie'.' said spring'` when un'delected, being'j ar-t ranged to' partially overlap the'pintle open;`

ing, and the enlargement being formedand` arrangedto.l permit a limited deflection'of said s piii'fig'wlieny the'loclcin'g :member is.

placed-upon its pintle;

In testimony whereof Ifaiix invlsignatuije.

opening extending'from the exterior of thev locking member tothe saidenlargement andv 7? The combination with a door lockingk largeinei'it,A and.v a beanrspring supported 

